Use catalog version for workers-types in dynamic-worker-loading fixture (#10490)

Author: jamesopstad

fixtures/dynamic-worker-loading/package.json

@@ -8,7 +8,7 @@
 	},
 	"devDependencies": {
 		"@cloudflare/workers-tsconfig": "workspace:^",
-		"@cloudflare/workers-types": "^4.20250823.0",
+		"@cloudflare/workers-types": "catalog:default",
 		"undici": "catalog:default",
 		"vitest": "catalog:default",
 		"wrangler": "workspace:*"